Electric-light socket.



J. CL FORSYTH.

ELECTRIC LlGHT SOCKET.

APPLlCATlQN FILED FEB. 24. 1917.

Patented Aug. 20, 1918.

INVENTOR J5. Papa a/Z C j I ATTORNEY JOSEPH C. FORSYTH, F BROOKLYN.

NEW YO sinus rannr union;

BK, ASSIGNOR OF ONE-FOURTH '10 V. G.

GILPIN AND ONE-FOURTH T0 3'. E. MOA'ULIFEE, BOTH OF BROOKLYN, NEW YORK.

. ELECTRIC-LIGHT socxnr.

Specification of Letters Patent.

Patented Aug, 22, 1918.

Application filed February 24, 1917. Serial No. 150,829.

To all whom 2'25 may concern:

Be it known that 1, Josnrn C. FonsY'rH, a citizen, of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and usetul Improvements in Electric-Light Sockets, of which the following is a specification.

This invention relates to electric light sockets or fixtures for incandescent lamps, the object of the invention being to provide a socket orfixture embodying an insulating or switch box of novel construction combined with a separable head section therefor, the latter having the current wires connected thereto in such manner as to insure electrical contact.

ii. further object in view is to provide an insulating or switch box having the parts thereof so combined that the mam body of the box may be detached from the head section thereof without disconnecting the current wires, thus enabling repairs to be quickly accomplished at a small cost as compared with the ordinary sockets now in use.

lVith the above and other objects in view, the invention consists in the novel construction, combination and arrangement of parts, herein fully described, illustrated and claimed.

in the accompanying drawings Figure 1 is a diainetri-cal section through the removable head on the insulating box.

Fig. 2 is a diametricalsection through the insulating box.

3 is also a diametrical section through the insulating box taken at right angles to Fig. 1 is a bottom plan view of the re movable head shown in Fig. 1,

Fig. 5 is a top plan view of the insulating box, with the head removed. I

Referring now to the drawings, 10, designates an insulating base or box usually of porcelain, the same being formed with a chamber 11, in which is placed a metal strip 12, provided with bearing holes for the shaft or shank of a turning key 13, carrying a contact element 14:, having a gap or space 15, therein. The contact member 14, cooperates with a spring contact 16, for the purpose of making and breaking the circuit. One end of the strip 12, is extended through an opening 17, in the top wall of the box 10, at one side of the center thereof to form a fixed plug terminal 18. Diametrically opposite the terminal 18, is another fixed plug terminal 19, having oppositely extendmg arms 20, connected by fastening means 21, to the box, the means 21, being shown in the form of bolts which pass through the top and bottom walls of the box. It is of course understood that these elements can be of any well known approved construction and do not have any particular relation to the invention, except in a specific manner as will be referred to hereinafter.

A screw or equivalent fastening device extends cent-rally throu h the top wall of the box 10, and secures the contact strip 12, in fixed relation thereto. A bottom contact strip 23, is secured within the bottom portion of the box 10, by means of a screw 23', or its equivalent.

The removable or separable head 25, is formed with a central opening 26, for-the lead in wires and is also formed at diametrically opposite places with sockets 27, to receive the terminals 18 and 19, above described and which project from the insulating box. In each of the sockets 27, there is fastened. a contact piece 28, and also arranged within each of said sockets 27, is a spring contact iece 27, or the equivalent thereof and each of said contact pieces carries a binding post 29, shown in the form of a screw to which the extremities of the lead in wires are fastened as shown in Fig. l. The head 25, is further provided with wire receiving slots 30, and arcuate lead passages 31, for the current wires, enabling the extremities of the latter to be easily and securely fastened to the binding posts 29. The construction just described enables the box 10, and the head 25, to be separated to obtain access to the parts and repair the latter, without disconnectingor disturbing the wires. The, rotatable disk-like contact member 14, is provided with a slot 14', as shown in Fig. 3, so that it may have a movement transversely of the reduced inner portion of the shank of the turn plug 13. As indicated in Figs. 2 and 3, the shank of the switch key 13, is provided with oppositely extending lugs 13, which are adapted to engage the opposing walls of the space or gap 15, in the contact member 14. By the means described, the key 13, is adapted to take up and rotate the cont-act member 13, while at the same time a limited transverse movement of the member 14, in relation to the stem ef the turn plug 13 is permitted. The belts er screws 521 new; 0111: sezve *;0 connect ehe sections 0f the box 10, together but they also secure the threaded member 2%, to the bar-1 end form eieehieei eenneetions between the arms 520, 01 i-he member 19., and said threedee member 2%.

claim: I

In an electric lamp fixture, the eembinatien es? an insulating 002:, terminal strips prejeeiing from said $001; one of said strips extending infiethe not; and hex/hi5 eppesizelj dis USS pertioms in spaced re men &0 each ,0 eee zae'; pieees i said. 1001 we which ie yield so lmbec'eeei to the terminal strip which extends mm the 0025., e m'ba' iebie Contact member mounted bet-Ween said contact pieces formed with e gap vie reeeive e portion of the yieldeble eenteee piece and a turn plug for actuseide retetebie cement member having its shank jeunmled in beefing holes in said opposite-el diseased poetloes ofthe termimi sirip passing throeeh the rotatable e011- tect member, said eetei hie eentect member being movable tr lSVEfSBlY of the turn plug m the i e e e'teral wage-13151011 t0 

